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Stockholders' Equity - Fair Value of Stock Option Assumptions Used (Details)
12 Months Ended
Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Dividend yield 0.00%
Employee Stock Option  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Expected volatility 51.60%
Risk-free interest rate, minimum 2.00%
Risk-free interest rate, maximum 3.00%
Dividend yield 0.00%
Employee Stock Option | Minimum  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Expected term (in years) 3 years 4 months 24 days
Employee Stock Option | Maximum  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Expected term (in years) 7 years